Transfer pricing is the price that one part of a multinational company charges another part of the same company for goods or services.
a big company like Apple has branches in different countries — one in the USA and another in Ireland.
If the U.S. branch sells computer chips to the Irish branch, it has to decide what price to charge. That price is the transfer price.
Because companies might use transfer pricing to reduce their tax bill.
The U.S. has high taxes, but Ireland has low taxes.
Apple might set a low price for the chips sold from the U.S. to Ireland.
That way, the profits show up in Ireland, where tax is lower.
👉 This is legal if done fairly — but if a company manipulates prices to avoid tax, it can be seen as tax avoidance (or even illegal in some cases).